During an install of XCode 4.2 for Snow Leopard (this is on a brand new install of Mac OSX that has been updated to the latest OSX version), I'm getting the following error in the /var/log/install.log file.
Failed install preflight: Error Domain=PKInstallErrorDomain Code=102 UserInfo=0x1003c46b0 "The package “OpenGLApps.pkg” is untrusted." Underlying Error=(Error Domain=NSOSStatusErrorDomain Code=-2147409654 UserInfo=0x1003b1f10 "The operation couldn’t be completed. CSSMERR_TP_CERT_EXPIRED")
The installer indicates a generic error and suggests to try the install again or contact the vendor.
Based on the entry in install.log, I'm guessing that there may be a way to force the OpenGLApps package to ignore the cert check.
This install was downloaded today from apple's developer website under Other Downloads.